The soviets distrusted us foreign policy because they thought it aimed

a. to encroach on eastern europe.
b. to increase us influence and control.
c. to create an alliance with china.
d. to gain control of cuba.

The right answer is "B.to increase US influence and control".

This happened during the Cold War, where a scenario of international power dispute was designed in which both the US and the USSR took advantage of every opportunity to expand their dominion and influence around the world.  In this scenario the USSR suspected that US foreign policy could increase American influence and control in the world, while Soviet influence would be smaller and less powerful.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.